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100985 (1998 QW30)
Classification: Main-belt Asteroid          SPK-ID: 2100985
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2405938482758156 4.1952e-08  
a 3.07718169579278 2.4316e-08 au
q 2.336830709758095 1.3421e-07 au
i 2.50648349827548 3.9553e-06 deg
node 176.3022608684575 0.00011172 deg
peri 139.5240369935405 0.00011201 deg
M 24.96846531033317 8.8927e-06 deg
tp 2458863.753101218204
(2020-Jan-15.25310122)
4.7866e-05 TDB
period 1971.642347640531
5.40
2.337e-05
6.398e-08
d
yr
n .1825888962218796 2.1642e-09 deg/d
Q 3.817532681827466 3.0166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      502  
   data-arc span      7673 days (21.01 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5552  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:05:15  

Additional Information
 Earth MOID = 1.32399 au 
 Jupiter MOID = 1.50818 au 
 T_jup = 3.182 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456961.5 (2014-Oct-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2421699303250717 4.1604e-08  
q 2.33173282885602 1.332e-07 au
tp 2456896.068580125712
(2014-Aug-26.56858013)
4.1735e-05 TDB
node 176.3786220180951 0.00011163 deg
peri 140.0666456261574 0.00011192 deg
i 2.507300587925761 3.958e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      502  
   data-arc span      7673 days (21.01 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5552  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:05:15  

Additional Information
 Jupiter MOID = 1.50818 au 
 T_jup = 3.182 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.73093056266701E-15 -5.491011614432187E-15 -3.669346726412172E-13 -2.530307942842314E-14 -2.74403874255373E-14 -1.212372783043372E-15
q -5.491011614432187E-15 1.774325658709015E-14 1.127892702576492E-12 8.007702800890369E-14 8.319331128725353E-14 4.163394293946579E-15
tp -3.669346726412172E-13 1.127892702576492E-12 1.741804154459537E-9 5.392863971349191E-12 3.693362613646073E-10 5.441652300006294E-13
node -2.530307942842314E-14 8.007702800890369E-14 5.392863971349191E-12 1.246193636819257E-8 -1.244895680480204E-8 -9.876637026439206E-11
peri -2.74403874255373E-14 8.319331128725353E-14 3.693362613646073E-10 -1.244895680480204E-8 1.252634629389563E-8 9.876963287789582E-11
i -1.212372783043372E-15 4.163394293946579E-15 5.441652300006294E-13 -9.876637026439206E-11 9.876963287789582E-11 1.566599014112661E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO436470  

100985 (1998 QW30)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 QW30 = 2003 NT5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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